Interface TemplateStringsArray

Readonly[unscopables]

Readonlylength

[iterator]

• [iterator](): IterableIterator<string>

• Iterator of values in the array.

  Returns IterableIterator<string>

at

• at(index): undefined | string

• Returns the item located at the specified index.

  Parameters

  • index: number

    The zero-based index of the desired code unit. A negative index will count back from the last item.

  Returns undefined | string

concat

• concat(...items): string[]

• Combines two or more arrays.

  Parameters

  • Rest...items: ConcatArray<string>[]

    Additional items to add to the end of array1.

  Returns string[]
• concat(...items): string[]

• Combines two or more arrays.

  Parameters

  • Rest...items: (string | ConcatArray<string>)[]

    Additional items to add to the end of array1.

  Returns string[]

entries

• entries(): IterableIterator<[number, string]>

• Returns an iterable of key, value pairs for every entry in the array

  Returns IterableIterator<[number, string]>

every

• every<S>(predicate, thisArg?): this is readonly S[]

• Determines whether all the members of an array satisfy the specified test.

  Type Parameters

  • S extends string

  Parameters

  • predicate: ((value: string, index: number, array: readonly string[]) => value is S)

    A function that accepts up to three arguments. The every method calls the predicate function for each element in the array until the predicate returns a value which is coercible to the Boolean value false, or until the end of the array.

    • • (value, index, array): value is S

      • Parameters

        • value: string
        • index: number
        • array: readonly string[]

        Returns value is S

  • OptionalthisArg: any

    An object to which the this keyword can refer in the predicate function. If thisArg is omitted, undefined is used as the this value.

  Returns this is readonly S[]
• every(predicate, thisArg?): boolean

• Determines whether all the members of an array satisfy the specified test.

  Parameters

  • predicate: ((value: string, index: number, array: readonly string[]) => unknown)

    A function that accepts up to three arguments. The every method calls the predicate function for each element in the array until the predicate returns a value which is coercible to the Boolean value false, or until the end of the array.

    • • (value, index, array): unknown

      • Parameters

        • value: string
        • index: number
        • array: readonly string[]

        Returns unknown

  • OptionalthisArg: any

    An object to which the this keyword can refer in the predicate function. If thisArg is omitted, undefined is used as the this value.

  Returns boolean

filter

• filter<S>(predicate, thisArg?): S[]

• Returns the elements of an array that meet the condition specified in a callback function.

  Type Parameters

  • S extends string

  Parameters

  • predicate: ((value: string, index: number, array: readonly string[]) => value is S)

    A function that accepts up to three arguments. The filter method calls the predicate function one time for each element in the array.

    • • (value, index, array): value is S

      • Parameters

        • value: string
        • index: number
        • array: readonly string[]

        Returns value is S

  • OptionalthisArg: any

    An object to which the this keyword can refer in the predicate function. If thisArg is omitted, undefined is used as the this value.

  Returns S[]
• filter(predicate, thisArg?): string[]

• Returns the elements of an array that meet the condition specified in a callback function.

  Parameters

  • predicate: ((value: string, index: number, array: readonly string[]) => unknown)

    A function that accepts up to three arguments. The filter method calls the predicate function one time for each element in the array.

    • • (value, index, array): unknown

      • Parameters

        • value: string
        • index: number
        • array: readonly string[]

        Returns unknown

  • OptionalthisArg: any

    An object to which the this keyword can refer in the predicate function. If thisArg is omitted, undefined is used as the this value.

  Returns string[]

find

• find<S>(predicate, thisArg?): undefined | S

• Returns the value of the first element in the array where predicate is true, and undefined otherwise.

  Type Parameters

  • S extends string

  Parameters

  • predicate: ((value: string, index: number, obj: readonly string[]) => value is S)

    find calls predicate once for each element of the array, in ascending order, until it finds one where predicate returns true. If such an element is found, find immediately returns that element value. Otherwise, find returns undefined.

    • • (value, index, obj): value is S

      • Parameters

        • value: string
        • index: number
        • obj: readonly string[]

        Returns value is S

  • OptionalthisArg: any

    If provided, it will be used as the this value for each invocation of predicate. If it is not provided, undefined is used instead.

  Returns undefined | S
• find(predicate, thisArg?): undefined | string

• Parameters

  • predicate: ((value: string, index: number, obj: readonly string[]) => unknown)
    • • (value, index, obj): unknown

      • Parameters

        • value: string
        • index: number
        • obj: readonly string[]

        Returns unknown

  • OptionalthisArg: any

  Returns undefined | string

findIndex

• findIndex(predicate, thisArg?): number

• Returns the index of the first element in the array where predicate is true, and -1 otherwise.

  Parameters

  • predicate: ((value: string, index: number, obj: readonly string[]) => unknown)

    find calls predicate once for each element of the array, in ascending order, until it finds one where predicate returns true. If such an element is found, findIndex immediately returns that element index. Otherwise, findIndex returns -1.

    • • (value, index, obj): unknown

      • Parameters

        • value: string
        • index: number
        • obj: readonly string[]

        Returns unknown

  • OptionalthisArg: any

    If provided, it will be used as the this value for each invocation of predicate. If it is not provided, undefined is used instead.

  Returns number

flat

• flat<A, D>(this, depth?): FlatArray<A, D>[]

• Returns a new array with all sub-array elements concatenated into it recursively up to the specified depth.

  Type Parameters

  • A
  • D extends number = 1

  Parameters

  • this: A
  • Optionaldepth: D

    The maximum recursion depth

  Returns FlatArray<A, D>[]

flatMap

• flatMap<U, This>(callback, thisArg?): U[]

• Calls a defined callback function on each element of an array. Then, flattens the result into a new array. This is identical to a map followed by flat with depth 1.

  Type Parameters

  • U
  • This = undefined

  Parameters

  • callback: ((this: This, value: string, index: number, array: string[]) => U | readonly U[])

    A function that accepts up to three arguments. The flatMap method calls the callback function one time for each element in the array.

    • • (this, value, index, array): U | readonly U[]

      • Parameters

        • this: This
        • value: string
        • index: number
        • array: string[]

        Returns U | readonly U[]

  • OptionalthisArg: This

    An object to which the this keyword can refer in the callback function. If thisArg is omitted, undefined is used as the this value.

  Returns U[]

forEach

• forEach(callbackfn, thisArg?): void

• Performs the specified action for each element in an array.

  Parameters

  • callbackfn: ((value: string, index: number, array: readonly string[]) => void)

    A function that accepts up to three arguments. forEach calls the callbackfn function one time for each element in the array.

    • • (value, index, array): void

      • Parameters

        • value: string
        • index: number
        • array: readonly string[]

        Returns void

  • OptionalthisArg: any

    An object to which the this keyword can refer in the callbackfn function. If thisArg is omitted, undefined is used as the this value.

  Returns void

includes

• includes(searchElement, fromIndex?): boolean

• Determines whether an array includes a certain element, returning true or false as appropriate.

  Parameters

  • searchElement: string

    The element to search for.
  • OptionalfromIndex: number

    The position in this array at which to begin searching for searchElement.

  Returns boolean

indexOf

• indexOf(searchElement, fromIndex?): number

• Returns the index of the first occurrence of a value in an array.

  Parameters

  • searchElement: string

    The value to locate in the array.
  • OptionalfromIndex: number

    The array index at which to begin the search. If fromIndex is omitted, the search starts at index 0.

  Returns number

join

• join(separator?): string

• Adds all the elements of an array separated by the specified separator string.

  Parameters

  • Optionalseparator: string

    A string used to separate one element of an array from the next in the resulting String. If omitted, the array elements are separated with a comma.

  Returns string

keys

• keys(): IterableIterator<number>

• Returns an iterable of keys in the array

  Returns IterableIterator<number>

lastIndexOf

• lastIndexOf(searchElement, fromIndex?): number

• Returns the index of the last occurrence of a specified value in an array.

  Parameters

  • searchElement: string

    The value to locate in the array.
  • OptionalfromIndex: number

    The array index at which to begin the search. If fromIndex is omitted, the search starts at the last index in the array.

  Returns number

map

• map<U>(callbackfn, thisArg?): U[]

• Calls a defined callback function on each element of an array, and returns an array that contains the results.

  Type Parameters

  • U

  Parameters

  • callbackfn: ((value: string, index: number, array: readonly string[]) => U)

    A function that accepts up to three arguments. The map method calls the callbackfn function one time for each element in the array.

    • • (value, index, array): U

      • Parameters

        • value: string
        • index: number
        • array: readonly string[]

        Returns U

  • OptionalthisArg: any

    An object to which the this keyword can refer in the callbackfn function. If thisArg is omitted, undefined is used as the this value.

  Returns U[]

reduce

• reduce(callbackfn): string

• Calls the specified callback function for all the elements in an array. The return value of the callback function is the accumulated result, and is provided as an argument in the next call to the callback function.

  Parameters

  • callbackfn: ((previousValue: string, currentValue: string, currentIndex: number, array: readonly string[]) => string)

    A function that accepts up to four arguments. The reduce method calls the callbackfn function one time for each element in the array.

    • • (previousValue, currentValue, currentIndex, array): string

      • Parameters

        • previousValue: string
        • currentValue: string
        • currentIndex: number
        • array: readonly string[]

        Returns string

  Returns string
• reduce(callbackfn, initialValue): string

• Parameters

  • callbackfn: ((previousValue: string, currentValue: string, currentIndex: number, array: readonly string[]) => string)
    • • (previousValue, currentValue, currentIndex, array): string

      • Parameters

        • previousValue: string
        • currentValue: string
        • currentIndex: number
        • array: readonly string[]

        Returns string

  • initialValue: string

  Returns string

• reduce<U>(callbackfn, initialValue): U

• Calls the specified callback function for all the elements in an array. The return value of the callback function is the accumulated result, and is provided as an argument in the next call to the callback function.

  Type Parameters

  • U

  Parameters

  • callbackfn: ((previousValue: U, currentValue: string, currentIndex: number, array: readonly string[]) => U)

    A function that accepts up to four arguments. The reduce method calls the callbackfn function one time for each element in the array.

    • • (previousValue, currentValue, currentIndex, array): U

      • Parameters

        • previousValue: U
        • currentValue: string
        • currentIndex: number
        • array: readonly string[]

        Returns U

  • initialValue: U

    If initialValue is specified, it is used as the initial value to start the accumulation. The first call to the callbackfn function provides this value as an argument instead of an array value.

  Returns U

reduceRight

• reduceRight(callbackfn): string

• Calls the specified callback function for all the elements in an array, in descending order. The return value of the callback function is the accumulated result, and is provided as an argument in the next call to the callback function.

  Parameters

  • callbackfn: ((previousValue: string, currentValue: string, currentIndex: number, array: readonly string[]) => string)

    A function that accepts up to four arguments. The reduceRight method calls the callbackfn function one time for each element in the array.

    • • (previousValue, currentValue, currentIndex, array): string

      • Parameters

        • previousValue: string
        • currentValue: string
        • currentIndex: number
        • array: readonly string[]

        Returns string

  Returns string
• reduceRight(callbackfn, initialValue): string

• Parameters

  • callbackfn: ((previousValue: string, currentValue: string, currentIndex: number, array: readonly string[]) => string)
    • • (previousValue, currentValue, currentIndex, array): string

      • Parameters

        • previousValue: string
        • currentValue: string
        • currentIndex: number
        • array: readonly string[]

        Returns string

  • initialValue: string

  Returns string

• reduceRight<U>(callbackfn, initialValue): U

• Calls the specified callback function for all the elements in an array, in descending order. The return value of the callback function is the accumulated result, and is provided as an argument in the next call to the callback function.

  Type Parameters

  • U

  Parameters

  • callbackfn: ((previousValue: U, currentValue: string, currentIndex: number, array: readonly string[]) => U)

    A function that accepts up to four arguments. The reduceRight method calls the callbackfn function one time for each element in the array.

    • • (previousValue, currentValue, currentIndex, array): U

      • Parameters

        • previousValue: U
        • currentValue: string
        • currentIndex: number
        • array: readonly string[]

        Returns U

  • initialValue: U

    If initialValue is specified, it is used as the initial value to start the accumulation. The first call to the callbackfn function provides this value as an argument instead of an array value.

  Returns U

slice

• slice(start?, end?): string[]

• Returns a section of an array.

  Parameters

  • Optionalstart: number

    The beginning of the specified portion of the array.
  • Optionalend: number

    The end of the specified portion of the array. This is exclusive of the element at the index 'end'.

  Returns string[]

some

• some(predicate, thisArg?): boolean

• Determines whether the specified callback function returns true for any element of an array.

  Parameters

  • predicate: ((value: string, index: number, array: readonly string[]) => unknown)

    A function that accepts up to three arguments. The some method calls the predicate function for each element in the array until the predicate returns a value which is coercible to the Boolean value true, or until the end of the array.

    • • (value, index, array): unknown

      • Parameters

        • value: string
        • index: number
        • array: readonly string[]

        Returns unknown

  • OptionalthisArg: any

    An object to which the this keyword can refer in the predicate function. If thisArg is omitted, undefined is used as the this value.

  Returns boolean

toLocaleString

• toLocaleString(): string

• Returns a string representation of an array. The elements are converted to string using their toLocaleString methods.

  Returns string
• toLocaleString(locales, options?): string

• Parameters

  • locales: string | string[]
  • Optionaloptions: NumberFormatOptions & DateTimeFormatOptions

  Returns string

toString

• toString(): string

• Returns a string representation of an array.

  Returns string

values

• values(): IterableIterator<string>

• Returns an iterable of values in the array

  Returns IterableIterator<string>